<!DOCTYPE html>
<html class=reftest-wait>
<title>View transitions: view-transition-names are tree scoped</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
<link rel="author" href="mailto:vmpstr@chromium.org">
<link rel="match" href="names-are-tree-scoped-ref.html">
<script src="/common/reftest-wait.js"></script>
<style>
div {
  width: 100px;
  height: 100px;
  background: red;
}

#one {
  view-transition-name: light1;
}
#two {
  view-transition-name: light2;
}
#three {
  view-transition-name: light3;
}

:root { view-transition-name: none; }
html::view-transition-group(*) { animation-play-state: paused; }
html::view-transition-old(*) { animation: unset; opacity: 0 }
html::view-transition-new(*) { animation: unset; opacity: 0 }
</style>

<custom-component>
  <template shadowrootmode="open">
    <style>
    div {
      width: 100px;
      height: 100px;
      background: green;
      view-transition-name: shadow;
    }
    </style>
    <div>
      <slot></slot>
    </div>
    <slot></slot>
  </template>
  <div id=one></div>
  <div id=two></div>
</custom-component>

<div id=three></div>

<script>
failIfNot(document.startViewTransition, "Missing document.startViewTransition");

function runTest() {
  document.startViewTransition().ready.then(takeScreenshot);
}
onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
</script>

</body>
